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Two AGU Fall Meeting Session Announcements: S016 and S017

Date: 07/06/2012

Dear SCEC Community,

Attached below are two session announcements for the AGU Fall Meeting in San Francisco (Dec. 3-7, 2012), as contributed by SCEC community members. Please note the abstract deadline of August 8 for these sessions.

=============== AGU Session S016 ===============

Dear colleagues,

We would like to draw your attention to the AGU Fall Meeting session entitled "Numerical modeling of the mega-earthquakes: Their scale and complexity" (session S016).

The session seeks seismological and geodynamical contributions on the modeling of various aspects of processes in the recent mega-earthquakes. Please find more details in the appended description of the session. Four invited speakers are: Drs. Kelin Wang (Geological Survey of Canada), Yuji Yagi (Tsukuba Univ., Japan), Luce Fleitout (ENS, France), and Jeremy Kozdon (Stanford Univ).

We very much hope that you can submit an abstract. The deadline for submission is August 8, 2012. Thank you very much, and we look forward to seeing you in December.

With best regards from the conveners,

Hideo Aochi (h.aochi@brgm.fr)

Satoshi Ide (ide@eps.s.u-tokyo.ac.jp)

Shuo Ma (sma@mail.sdsu.edu)


S016: Numerical Modeling of the Mega-earthquakes: Their Scale and Complexity

"Mega-earthquakes (crustal earthquakes of M8 class and subduction events of about M9) have been more frequent in the world during this decade, compared to the preceding three decades. These damaging earthquakes cause significant social impacts and they are also important for the evolution of the geodynamic system. Understanding such mega-earthquakes is, therefore, a common objective of different communities. In the past decades, mainly during the relative quiescence of mega-earthquakes, we studied moderate earthquakes and developed procedures of data analysis and numerical simulations. These procedures and results may not be directly applicable to mega-earthquakes, because of their enormous scale, unknown physical processes and conditions, long uncertain recurrence intervals and different resolutions of observations. The goal of this session is to model such mega-earthquakes from the different points of view: coseismic source, wave propagation and deformation process, and preparation and relaxation processes. The session seeks seismological and/or geodynamical contributions on the modeling of the recent mega-earthquakes to share advances as well as difficulties and topics of future research. We also call for contributions concerning advanced data analyses revealing the key elements leading to an understanding of the scale and complexity of mega-earthquakes."

=============== AGU Session S017 ===============

Dear Colleagues,

Abstract submission for the 2012 AGU Fall Meeting (3-7 December 2012) is now open and we would like to draw your attention to the following session S017 on "Seismic Rupture and Fault Zone Properties" (detailed description below), sponsored by the Seismology (S) section and co-sponsored by the Tectonophysics (T) section.

The goal is to bring together experts from the cutting edge of multiple facets of the study of seismic rupture and fault zone properties: field observations, seismological and geodetic observations, numerical and experimental simulations. Our aim is to contrast different perspectives and promote a productive dialog.

We encourage your contribution and participation. Abstract submission deadline is 8 August 2012.

Please, feel free to forward this email to anyone potentially interested.


S017: Seismic Rupture and Fault Zone Properties

The geometrical and rheological heterogeneities along faults can affect all the stages of the seismic rupture, from its nucleation, through its propagation and branching, and finally its ultimate arrest. This session solicits contributions from observational, experimental, theoretical and numerical perspectives focused on the complex interaction between the seismic rupture and the geometrical and rheological properties of faults, and its signatures on ground motion, geodetic and field observations.

Examples of questions we seek to address are:

What constraints on fault zone properties are robustly provided by field, seismological, and geodetic observations? How does the geometry of faults vary with depth and how are fault characteristics at the surface and at seismogenic depth related? Are there two main types of faults: one structurally simple and one structurally complex? Can numerical modeling of seismic rupture taking into account laws of continuum mechanics and frictional sliding fit observations? Can equivalent simple models provide a coarse-scale description of dynamic ruptures on complex faults? Can the different signatures of the seismic ruptures be related to different fault zones properties? Are there structural controls on distinct locations of low and high-frequency seismic radiation?


Thibault Candela (Department of Earth and Planetary Sciences, University of California–Santa Cruz, Santa Cruz, CA, United States, tcandela@ucsc.edu).

Jean Paul Ampuero (Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States, ampuero@gps.caltech.edu).

François Renard (University of Grenoble I, Institut des Sciences de la Terre, Grenoble, France, francois.renard@ujf-grenoble.fr).

Ralph J. Archuleta (Earth Science Department, University of California Santa Barbara, Santa Barbara, CA, United States, ralph@eri.ucsb.edu).

Session link:


We are looking forward to seeing you at the Meeting.

Thank you for considering this session,

The organizers